@hdwallet/core
Version:
A complete Hierarchical Deterministic (HD) Wallet generator for 200+ cryptocurrencies, built with TypeScript.
59 lines • 3.14 kB
JavaScript
;
// SPDX-License-Identifier: MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.NanoAddress = void 0;
const cryptocurrencies_1 = require("../cryptocurrencies");
const exceptions_1 = require("../exceptions");
const base32_1 = require("../libs/base32");
const crypto_1 = require("../crypto");
const eccs_1 = require("../eccs");
const utils_1 = require("../utils");
const address_1 = require("./address");
class NanoAddress extends address_1.Address {
static addressPrefix = cryptocurrencies_1.Nano.PARAMS.ADDRESS_PREFIX;
static alphabet = cryptocurrencies_1.Nano.PARAMS.ALPHABET;
static payloadPaddingDecoded = (0, utils_1.getBytes)(cryptocurrencies_1.Nano.PARAMS.PAYLOAD_PADDING_DECODED);
static payloadPaddingEncoded = cryptocurrencies_1.Nano.PARAMS.PAYLOAD_PADDING_ENCODED;
static getName() {
return 'Nano';
}
static computeChecksum(publicKey) {
return (0, utils_1.bytesReverse)((0, crypto_1.blake2b40)(publicKey));
}
static encode(publicKey) {
const pk = (0, eccs_1.validateAndGetPublicKey)(publicKey, eccs_1.SLIP10Ed25519Blake2bPublicKey);
const raw = pk.getRawCompressed().subarray(1);
const checksum = this.computeChecksum((0, utils_1.getBytes)(raw));
const payload = (0, utils_1.concatBytes)(this.payloadPaddingDecoded, raw, checksum);
const b32 = (0, base32_1.encodeNoPadding)((0, utils_1.bytesToString)(payload), this.alphabet);
return this.addressPrefix + b32.slice(this.payloadPaddingEncoded.length);
}
static decode(address) {
const prefix = address.slice(0, this.addressPrefix.length);
if (prefix !== this.addressPrefix) {
throw new exceptions_1.AddressError('Invalid prefix', { expected: this.addressPrefix, got: prefix });
}
const body = address.slice(this.addressPrefix.length);
const fullEncoded = this.payloadPaddingEncoded + body;
const decoded = (0, utils_1.getBytes)((0, base32_1.decode)(fullEncoded, this.alphabet));
const expectedLen = this.payloadPaddingDecoded.length + eccs_1.SLIP10Ed25519Blake2bPublicKey.getCompressedLength() - 1 + 5;
if (decoded.length !== expectedLen) {
throw new exceptions_1.AddressError('Invalid decoded length', { expected: expectedLen, got: decoded.length });
}
const data = decoded.subarray(this.payloadPaddingDecoded.length);
const pubkey = data.subarray(0, data.length - 5);
const checksum = data.subarray(-5);
const gotChecksum = this.computeChecksum(pubkey);
if (!(0, utils_1.equalBytes)(checksum, gotChecksum)) {
throw new exceptions_1.AddressError('Invalid checksum', {
expected: (0, utils_1.bytesToString)(checksum), got: (0, utils_1.bytesToString)(gotChecksum)
});
}
if (!eccs_1.SLIP10Ed25519Blake2bPublicKey.isValidBytes(pubkey)) {
throw new exceptions_1.AddressError('Invalid public key');
}
return (0, utils_1.bytesToString)(pubkey);
}
}
exports.NanoAddress = NanoAddress;
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